鋼鐵動力公司
MX ˙ BMV ˙ US8581191009
SecurityMX:STLD / Steel Dynamics, Inc.
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership3,040 shares
Latest Disclosed Value $ 547,200
Marshall Wace, Llp reports 144.18% increase in ownership of STLD / Steel Dynamics, Inc.

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 3,040 shares of Steel Dynamics, Inc. (MX:STLD) valued at $547,200 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,245 shares of Steel Dynamics, Inc.. This represents a change in shares of 144.18% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F STEEL DYNAMICS COMMON STOCK 858119100 3,040 1,795 144.18 547 160.48 0.0003
2026-02-13 2025-12-31 13F STEEL DYNAMICS COMMON STOCK 858119100 1,245 1,245 211 0.0002
2025-08-13 2025-06-30 13F STEEL DYNAMICS COMMON STOCK 858119100 0 -38,505 -100.00 0 -100.00
2025-05-15 2025-03-31 13F STEEL DYNAMICS COMMON STOCK 858119100 38,505 38,505 4,816 0.0061
2025-02-13 2024-12-31 13F STEEL DYNAMICS COMMON STOCK 858119100 0 -66,270 -100.00 0 -100.00
2024-11-14 2024-09-30 13F STEEL DYNAMICS COMMON STOCK 858119100 66,270 66,270 8,355 0.0102
2024-05-15 2024-03-31 13F STEEL DYNAMICS COMMON STOCK 858119100 0 -136,689 -100.00 0 -100.00
2024-02-14 2023-12-31 13F STEEL DYNAMICS COMMON STOCK 858119100 136,689 136,689 16,143 0.0273
2023-08-14 2023-06-30 13F STEEL DYNAMICS COMMON STOCK 858119100 0 -4,123 -100.00 0 -100.00
2023-05-15 2023-03-31 13F STEEL DYNAMICS COMMON STOCK 858119100 4,123 4,123 466 0.0010
2022-11-14 2022-09-30 13F STEEL DYNAMICS COMMON STOCK 858119100 0 -7,673 -100.00 0 -100.00
2022-08-15 2022-06-30 13F STEEL DYNAMICS COMMON STOCK 858119100 7,673 7,673 507 0.0010
2021-08-13 2021-06-30 13F STEEL DYNAMICS COMMON STOCK 858119100 0 -64,113 -100.00 0 -100.00
2021-05-17 2021-03-31 13F STEEL DYNAMICS COMMON STOCK 858119100 64,113 32,200 100.90 3,255 176.55 0.0149
2021-02-16 2020-12-31 13F STEEL DYNAMICS COMMON STOCK 858119100 31,913 31,913 -50.22 1,177 -63.84 0.0064
2019-08-14 2019-06-30 13F STEEL DYNAMICS COMMON STOCK 858119100 0 -593,892 -100.00 0 -100.00
2019-05-29 2019-03-31 13F/A-1 STEEL DYNAMICS COMMON STOCK 858119100 593,892 556,366 1,482.61 20,947 1,758.65 0.1969
2019-05-14 2019-03-31 13F STEEL DYNAMICS COMMON STOCK 858119100 593,892 556,366 20,947
2019-02-14 2018-12-31 13F STEEL DYNAMICS COMMON STOCK 858119100 37,526 -434,918 -92.06 1,127 -94.72 0.0115
2018-12-06 2018-09-30 13F/A-1 STEEL DYNAMICS COMMON STOCK 858119100 472,444 472,444 1,158.98 21,350 1,794.41 0.1816
2018-11-14 2018-09-30 13F STEEL DYNAMICS COMMON STOCK 858119100 472,444 472,444 21,350
2017-05-12 2017-03-31 13F STEEL DYNAMICS COMMON STOCK 858119100 0 -530,021 -100.00 0 -100.00
2017-02-10 2016-12-31 13F STEEL DYNAMICS COMMON STOCK 858119100 530,021 368,738 228.63 18,858 367.94 0.1240
2016-11-10 2016-09-30 13F STEEL DYNAMICS COMMON STOCK 858119100 161,283 115,992 256.10 4,030 263.06 0.0287
2016-08-12 2016-06-30 13F STEEL DYNAMICS COMMON STOCK 858119100 45,291 -686,434 -93.81 1,110 -93.26 0.0093
2016-05-13 2016-03-31 13F STEEL DYNAMICS COMMON STOCK 858119100 731,725 731,725 1,515.61 16,471 1,383.87 0.1587
2016-02-10 2015-12-31 13F STEEL DYNAMICS COMMON STOCK 858119100 0 -344,016 -100.00 0 -100.00
2015-11-12 2015-09-30 13F STEEL DYNAMICS COMMON STOCK 858119100 344,016 344,016 0.00 5,910 0.0726
2015-02-17 2014-12-31 13F STEEL DYNAMICS COMMON STOCK 858119100 0 -14,312 -100.00 0 -100.00
2014-11-13 2014-09-30 13F STEEL DYNAMICS COMMON STOCK 858119100 14,312 -426,863 -96.76 324 -95.91 0.0047
2014-08-14 2014-06-30 13F STEEL DYNAMICS COMMON STOCK 858119100 441,175 418,275 1,826.53 7,919 1,845.70 0.1166
2014-05-14 2014-03-31 13F STEEL DYNAMICS COMMON STOCK 858119100 22,900 22,900 407 0.0074
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.